modify element matrix before assembling

Question

In the assemble algorithm:

for T ∈ ...
    Compute the element matrix Aij
    Compute the local-to-global mapping 
    Add Aij to A according to mapping
end for

Is there any way to modify element matrix Aij before added to the global matrix A? Thanks.

chris_richardson · Answer 1 · Jul 22, 2015

I think you would have to write your own assembler

answered Jul 22, 2015 by chris_richardson FEniCS Expert (31,740 points)

Thanks chris.
Could you share me some links of the references or examples of this? I totally have no idea where to start.

commented Jul 22, 2015 by lz2m12 FEniCS Novice (290 points)

1 Answer